Hi,I recently experienced the same issue, after restoring my wife's MB from a Time Machine backup. I've tried resolving following exactly the same steps. Even though I could not reinstall 10.6.6 because we have Snow Leopard 10.6.7 installed...

Could not even find the com.apple.appstore folder in the Library?

I could use som serious help, coz Mac App Store will not start, and it worked fine, before my wife's hdd crash..

Apple won't help you if you're not under Apple Care... even though the App Store was just launched recently. So now I have apps purchased on my MacBook Pro that I can't get on the same account on my iMac. Pretty useless if you ask me.

I've tried deleting the Library files listed in various threads but nothing. I managed to squeeze out of the tech at Apple Care (before he all but hung up on me) that I should try deleting the App Store and then reinstalling the 10.6.7 combo. That didn't work. Now I don't even have the App Store on my machine.

Apple won't help you if you're not under Apple Care... even though the App Store was just launched recently. So now I have apps purchased on my MacBook Pro that I can't get on the same account on my iMac. Pretty useless if you ask me.

I've tried deleting the Library files listed in various threads but nothing. I managed to squeeze out of the tech at Apple Care (before he all but hung up on me) that I should try deleting the App Store and then reinstalling the 10.6.7 combo. That didn't work. Now I don't even have the App Store on my machine.

You might try creating another user account on the iMac and seeing if it works there.

I have been having a problem with trying to update an app using my default user but nothing happens when I try to update and I can't view my account under the store window or sign out. However, if I use an alternate user account, I can update the app so it can't be the App Store app, must be some of the user specific info in my default home folder. I tried deleting all the files that Carolyn suggested with no success but realized that I overlooked the Cookies.plist in ~/Library/Cookies. Doing that got rid of my account in the App store but I still can't sign in. I have been running 10.6.7 since the day it came out and I think a previous update worked under 10.6.7.

Thank you CMCSK but I don't live in the US. I've called Apple on multiple occasions about this but I get nowhere. As soon as they get my iMac's serial, they're done with me. My iMac was a year old in January and no, I didn't purchase the extended Apple Care. Regardless, I think Apple should offer better support on a product like the Mac App Store which was installed on my computer via Software Update. Now I've got this broken, useless app as a result of keeping my OS current.

Hello Carolyn, I am having a similar problem.. when i start my appstore application in my macbook pro it will start but only says one moment please connecting to the itunes store, and it will stay there for ever.. I have the Mac os x 10.6.7, i tried to do what you said of errasing the cache and the warnings.. but didnt help and i dont know if instaling again the OS lynk you putted there will help because the version it appears is the 10.6.6. My appstore never was opened because this problem i always had it. Thank you!

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